Search results for " Phoenix"

Action Programs for Rhynchophorus ferrugineus and Paysandisia archon

2017

The spread of invasive alien species is strongly associated with the rapid acceleration of human trade, tourism, transport, and travel over the past century, which have allowed these species to overcome natural geographic barriers. The best strategy to prevent the spread of invasive species is quarantine and eradication of initial foci. However, when invasive species appear to be established, the best approach should focus on containment and decreasing their impact through specific control measures. In this context, considering the rapid spread of the two palm pest species recently introduced in the Mediterranean area-Rhynchophorus ferrugineus (red palm weevil, RPW) and Paysandisia archon (…

Paysandisia archon: Taxonomy, distribution, biology and life cycle

2017

The taxonomic position of the family Castniidae within the order Lepidoptera has changed over time. Initially, it was classified in the superfamily Sesioidea, and then it was grouped in a large assemblage including the Cossoidea, Sesioidea, and Zygaenoidea. Recent studies have included it in the superfamily Cossoidea. In Europe, the palm borer moth (PBM) Paysandisia archon is the only species of the Castniidae. This moth, native to South America (Argentina and Uruguay), was first reported in Europe (France and Spain) in 2001, but it is believed to have been introduced before 1995 on palm trees imported from Argentina. Since then, the moth has been reported in Belgium, Bulgaria, Cyprus Islan…

Exotic insect pests: The impact of the Red Palm Weevil on natural and cultural heritage in Palermo (Italy)

2013

Abstract The impact of invasive exotic pests is increasingly recognised as a global issue. A global strategy to address the exotic pest problem is beginning to evolve, albeit slowly. The International Plant Protection Convention (FAO) has begun the process of harmonizing standards for pest risk analysis to minimise the spread of exotic pests without adversely impacting global trade. However if the impacts of insect invasive species on human health and on agriculture have attracted worldwide attention, researchers and policymakers address directly the connection between invasive species and damage to natural and cultural heritages. The cost of these losses is generally neglected or underesti…

The culturable bacterial community of frass produced by larvae of Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae) in the Canary island …

2012

Aims: Larvae of the red palm weevil (RPW) Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae) feed inside palm stem tissues, making galleries and producing a wet fermenting frass. We characterized the culturable micro-organisms associated with frass produced by tunnelling larvae inside the Canary island date palms and investigated the role of frass and gut bacteria in plant polymers breakdown. Methods and Results: A culture-dependent method was used to isolate bacteria from frass and noninfested palm tissues. Bacterial isolates were grouped into operational taxonomic units based on polymorphisms in the ITS-PCR profiles, and representative isolates were identified by partial sequenci…

Transcriptome analysis of Phoenix canariensis Chabaud in response to Rhynchophorus ferrugineus Olivier attacks

2015

Red Palm Weevil (RPW, Rhynchophorus ferrugineus Olivier) threatens most palm species worldwide. Until now, no studies have analyzed the gene regulatory networks of Phoenix canariensis (Chabaud) in response to RPW attacks. The aim of this study was to fill this knowledge gap. Providing this basic knowledge is very important to improve its management.Results: A deep transcriptome analysis was performed on fully expanded leaves of healthy non-infested trees and attacked trees at two symptom stages (middle and late infestation). A total of 54 genes were significantly regulated during middle stage. Pathway enrichment analysis showed that phenylpropanoid-related pathways were induced at this stag…

Association of entomopathogenic fungi with exotic red palm weevil in treated and untreated Phoenix canariensis

2011

Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae) is introduced pests of established Phoenix canariensis in Sicily (Italy). A three-year field survey of R. ferrugineus generated data on species of fungal associated with larval, pupae, and adult R. ferrugineus recovered from several cadavers. Moreover specimens were collected from infested Phoenix canariensis in scattered locales in Sicily to determine also infection rates with entomopathogenic fungi over 3 years. Collection was done after overwintering period, during summer and at the beginning of autumn in palm, untreated and treated with chemical pesticides. As can be expected the highest infestation was recorded after overw…

Potential effects of Bacillus thuringiensis against adults and older larvae of Rhynchophorus ferrugineus.

2009

NATURAL OCCURRENCE AND CHARACTERISTICS OF ENTOMOPATHOGENIC FUNGI ISOLATED FROM RED PALM WEEVIL IN SICILY (ITALY).

2008

Introduction: Originally from tropical Asia, the red palm weevil (Rhynchophorus ferrugineus (Olivier)) is the most dangerous and deadly pest of date, coconut, oil, sago and other palms. It has spread to Africa and Europe, reaching the Mediterranean in the 1980s, and was first recorded in Sicily (Italy) in 2005. Due to its recent introduction and the difficulty of its control, to known the natural pathogens of RPW in the introduced areas is very important. Methods: Pupae from infested palms Phoenix canariensis Hort. were collected. The entomopathogenic fungi were isolated and growth. Because of it is possible to growth only the 1% of the known fungi, the identification of entomopathogens is …

INDAGINI SULLA RISPOSTA IMMUNITARIA DEL PUNTERUOLO ROSSO NEI CONFRONTI DEI NEMATODI ENTOMOPAGENI

2009

Il Punteruolo rosso delle palme (Rhynchophorus ferrugineus Olivier, 1790. Coleoptera Curculionidae), originario dell’Asia meridionale si è velocemente diff uso nell’areale mediterraneo attaccando diversi generi di palme e creando seri problemi al settore ornamentale e vivaistico, oltre che alle aree verdi delle città. Il controllo di questo fi tofago si è rivelato problematico e di diffi cile realizzazione a causa delle sue proprietà invasive. Allo stato attuale non sono stati individuati patogeni effi caci nella lotta biologica, anche se i nematodi entomopatogeni (EPN) sono stati impiegati con discreto successo in Spagna. Generalmente gli EPN sono impiegati contro gli stadi larvali ma poic…

Osservazioni al microscopio elettronico a Scansione (SEM) del rachide fogliare di palme attaccate da Punteruolo rosso

2009

vengono mostrate e commentate le immagini al Microsopio elettronico a scansione del rachide fogliare di Phoenix canariensis attaccate dal Punteruolo rosso